[Python-ideas] why not "name = value if condition"?

[Tennessee Leeuwenburg]

As an aside only, it would be pretty reasonable IMO to have

name = value if condition

and set name to None otherwise

But I'm -1 on the idea as I think it's a bit redundant.

Cheers,
-T

On Wed, Apr 8, 2009 at 12:55 AM, spir <denis.spir at free.fr> wrote:

> Le Tue, 7 Apr 2009 23:38:21 +1000,
> Steven D'Aprano <steve at pearwood.info> s'exprima ainsi:
>
> > > What's the reason why
> > >    name = value if condition
> > > is invalid? Meaning: there _must_ be an else clause.
>
> > Because "value if condition else other" is an expression, not a
> > statement, and thus *must* have a value.
> >
> >     name = value if condition
> >
> > only has a value sometimes, and so is invalid [...]
>
> Yes, thank you! That's the explaination I was looking for.
> I meant to use the above formulation for updating already defined
> variables. Indeed, python does not make the difference I have in mind ;-).
>
> As a side note,
>   if condition: name = value
> (where 'name' is already registered) is the only case when I do not indent
> a block, for the reason that it means for me the same as the above invalid
> one-liner.
>
> Denis
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-- 
--------------------------------------------------
Tennessee Leeuwenburg
http://myownhat.blogspot.com/
"Don't believe everything you think"
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